FourierDivImg

DESCRIPTION

Forms the quotient of two frequency domain images. The first input is taken as the numerator and the second as the denominator. The numerator value is used for the quotient if the denominator at that point is zero. This operation is useful for image filtering and restoration operations. The inputs must be frequency domain images in the packed format produced by the ForwardFFTImg module (see format description in ForwardFFTImg documentation). The Fourier transformation and the cross correlation are discussed in:

Digital Image Processing, Gonzales, R.C., Wintz, P., Addison Wesley, Second Edition, 1987, pp 61--137.

INPUTS

Port: First Img In
Type: Lattice
Constraints: 1..3-D
Numerator frequency domain image.

Port: Second Img In
Type: Lattice
Constraints: 1..3-D
Denominator frequency domain image.

WIDGETS

OUTPUTS

Port: Img Out
Type: Lattice
Constraints: 1..3-D
Quotient frequency domain image.

KNOWN PROBLEMS

SEE ALSO

ForwardFFTImg, InverseFFTImg, FourierMultImg, FourierPwrImg.
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© The Numerical Algorithms Group Ltd, Oxford UK. 2000